{"id":28405,"date":"2026-09-25T19:12:05","date_gmt":"2026-09-25T23:12:05","guid":{"rendered":"https:\/\/belacereais.com.br\/2026\/feijao\/feijao-erro-na-dessecacao-pode-reduzir-produtividade\/"},"modified":"2026-09-25T19:12:05","modified_gmt":"2026-09-25T23:12:05","slug":"feijao-erro-na-dessecacao-pode-reduzir-produtividade","status":"publish","type":"post","link":"https:\/\/belacereais.com.br\/en\/2026\/feijao\/feijao-erro-na-dessecacao-pode-reduzir-produtividade\/","title":{"rendered":"Beans: errors in desiccation can reduce productivity."},"content":{"rendered":"

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Pre-planting desiccation of bean<\/a> This is an important step in reducing competition with weeds before sowing. According to data released in the technical material presented, errors in herbicide selection, application timing, or sprayer adjustment can cause phytotoxicity, stand failures, and productivity losses.\n<\/p>\n

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Weed control begins before sowing.<\/strong><\/p>\n

In virtually all bean-producing regions of Brazil, weeds are among the main factors associated with productivity loss. Fleabane, goosegrass, crabgrass, dayflower, nutsedge, black nightshade, and amaranth can compete with bean plants for water, light, and nutrients.<\/p>\n

According to data released in the technical material presented, the period between emergence and approximately 30 to 35 days after emergence is especially critical. Beans have a short cycle, relatively shallow roots, and low initial competitive capacity.\n<\/p>\n

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Therefore, the presence of weeds at this stage can limit crop recovery even when control measures are implemented later.<\/p>\n

In no-till farming, desiccation allows for the elimination of existing vegetation without resorting to harrowing and scarification, preserving the straw and soil structure. In conventional tillage, it can complement the mechanical control of regrowth, perennial plants, and resistant weeds.<\/p>\n

How to perform pre-planting desiccation<\/strong><\/p>\n

Desiccation involves the application of non-selective herbicides before sowing. These products can have contact or systemic action, depending on the characteristics of the herbicide and the weeds present.<\/p>\n

According to data released in the technical material presented, planning begins with surveying the existing species, their stage of development, and the level of infestation.<\/p>\n

Next, it is necessary to choose the herbicide(s) according to the type of weed, resistance history, production system, and previous crop.<\/p>\n

The application date also needs to be planned in relation to sowing. Depending on the situation, desiccation can be done earlier, between 30 and 40 days before, or closer to planting, between 7 and 15 days before.<\/p>\n

Weather conditions also affect the outcome. The recommendation is to work with adequate humidity, without strong winds and with moderate temperatures, avoiding rain in the hours following application.<\/p>\n

The timing of the application requires attention.<\/strong><\/p>\n

The interval between desiccation and sowing must be respected according to the product label. This period allows the herbicide to act on the weeds and reduces the risk of harmful effects on the bean plant.<\/p>\n

According to data released in the technical material presented, planning should change throughout the year, since temperature, soil moisture, rainfall patterns, and weed pressure vary between different growing seasons.<\/p>\n

During hot and humid periods, weeds can develop more rapidly. Conversely, in dry conditions, stressed plants may exhibit reduced control efficiency due to decreased absorption and translocation of herbicides.<\/p>\n

Efficient desiccation reduces competition in crops.<\/strong><\/p>\n

When management is carried out properly, there is a reduction in weed competition in the first weeks of bean development.<\/p>\n

The absence of weeds also promotes uniform emergence and facilitates the operation of seeders, with a lower risk of clogging caused by green mass.<\/p>\n

Another effect is the improved utilization of nutrients by the crop. According to data released in the technical material presented, elements such as nitrogen and phosphorus are no longer consumed by weeds and become available to the bean plant.<\/p>\n

Desiccation also helps improve the efficiency of post-emergence herbicides, since the initial weed pressure has already been reduced.<\/p>\n

Mistakes can lead to losses in bean production.<\/strong><\/p>\n

Poorly planned desiccation can cause phytotoxicity when the intervals between application and sowing are not respected. The problem can also occur in cases of drift to already planted areas.<\/p>\n

Late applications, inadequate spray volume, worn nozzles, or unsuitable products can leave weeds alive, promoting their growth alongside the bean plants.<\/p>\n

Another risk is re-infestation. When desiccation is carried out too early, new flushes of weeds may emerge before or soon after sowing if the area is not monitored.<\/p>\n

The repeated and isolated use of the same mechanism of action can also favor the selection of resistant biotypes, making control more difficult and expensive in subsequent crops.<\/p>\n

The area's history guides the strategy.<\/strong><\/p>\n

According to data released in the technical material presented, the history of the area should be considered before choosing a management strategy. The frequency of species, suspected resistance, and products used in the previous crop help define the strategy.\n<\/p>\n

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Areas with a history of horseweed and goosegrass, for example, may require early desiccation and scheduled sequential applications.<\/p>\n

The stage of growth of the plants also affects the outcome. Young plants, with between two and four true leaves, tend to be easier to control.<\/p>\n

Adult, perennial, or flowering plants require more attention and may demand a combination of action mechanisms, always according to the product label and prescription.<\/p>\n

Adjusting the sprayer prevents malfunctions.<\/strong><\/p>\n

Equipment adjustment is another crucial point for pre-harvest desiccation of beans. Nozzles, spray volume, pressure, boom height, and working speed must be adjusted according to the product and target.<\/p>\n

According to data released in the technical material presented, poorly regulated sprayers can cause overdosing in certain areas or coverage failures.<\/p>\n

Drift should also be avoided. The boom height and nozzles used need to be appropriate, especially when there are already sown bean fields or other crops nearby.<\/p>\n

After application, the producer should monitor the area to check if the weeds are drying out uniformly. Significant escapes should be assessed before sowing.<\/p>\n

Mixtures require technical guidance.<\/strong><\/p>\n

The use of herbicide mixtures with different mechanisms of action can broaden the spectrum of control and contribute to resistance management.<\/p>\n

However, according to data released in the technical material presented, it is necessary to verify the physical and chemical compatibility of the products, in addition to the label recommendations regarding mixing and the order of preparation of the spray solution.<\/p>\n

The recommendation of the agricultural engineer responsible for the prescription should also be considered. Inappropriate mixtures can cause phytotoxicity or reduce the effectiveness of one of the components.<\/p>\n

Integrated management enhances control.<\/strong><\/p>\n

Pre-planting desiccation should not be used in isolation. The strategy can be integrated into crop rotation, the use of cover crops, and crop management.<\/p>\n

Crop rotation allows for alternating crops, planting times, and herbicides, helping to reduce the pressure from certain weed species.<\/p>\n

Cover crops also contribute to the formation of mulch, which reduces the emergence of new weeds, improves water infiltration, and protects the soil.<\/p>\n

Proper fertilization, plant population, correct sowing depth, and the selection of cultivars adapted to the region help the bean plant to close the rows more quickly.<\/p>\n

Respecting the package insert and prescription is essential.<\/strong><\/p>\n

The use of herbicides for desiccation must follow the label and package insert recommendations. These documents specify the registered crops, doses, intervals, application conditions, and environmental precautions.<\/p>\n

According to data released in the technical material presented, the application of pesticides must be based on an agronomic prescription issued by a qualified agricultural engineer.<\/p>\n

It is also necessary to use the personal protective equipment indicated for the preparation and application of the products.<\/p>\n

Environmental care includes avoiding contamination of water sources, respecting permanent preservation areas, not washing equipment in waterways, and properly disposing of empty containers at authorized collection points.<\/p>\n

Checklist before drying the beans<\/strong><\/p>\n

Before application, the producer must identify the main weeds and assess the stage of development of each species.<\/p>\n

It is also important to check the area's history, including possible cases of resistance and the products used in recent harvests.<\/p>\n

The choice of herbicide or combination should take into account the product label, the type of weed, and the guidance of an agricultural engineer.<\/p>\n

Another important consideration is setting the application date in relation to sowing, respecting the interval indicated for the common bean.<\/p>\n

The sprayer must be calibrated and weather conditions assessed before operation. After application, monitoring allows for the identification of potential leaks and adjustments to be made before planting.<\/p>\n

According to data released in the technical material presented, well-planned desiccation contributes to a more uniform establishment of the crop and reduces weed pressure during the initial stages of bean growth.<\/p>\n<\/p><\/div>\n

THE Bela Cereais<\/strong> works with the best grains on the market and also keeps you up to date with the latest news and analyses on agribusiness.
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A desseca\u00e7\u00e3o pr\u00e9-plantio do feij\u00e3o \u00e9 uma etapa importante para reduzir a competi\u00e7\u00e3o com plantas…<\/p>","protected":false},"author":1,"featured_media":27906,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[219],"tags":[244,248,255,249,254,250,246,247,256,245,253,252,251],"class_list":["post-28405","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-feijao","tag-agrolink","tag-agrotoxicos","tag-artigos-tecnicos","tag-classificados","tag-colunistas","tag-compra","tag-cotacoes","tag-defensivos","tag-eventos","tag-noticias","tag-precos-agricolas","tag-previsao-do-tempo","tag-venda"],"_links":{"self":[{"href":"https:\/\/belacereais.com.br\/en\/wp-json\/wp\/v2\/posts\/28405","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/belacereais.com.br\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/belacereais.com.br\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/belacereais.com.br\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/belacereais.com.br\/en\/wp-json\/wp\/v2\/comments?post=28405"}],"version-history":[{"count":0,"href":"https:\/\/belacereais.com.br\/en\/wp-json\/wp\/v2\/posts\/28405\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/belacereais.com.br\/en\/wp-json\/wp\/v2\/media\/27906"}],"wp:attachment":[{"href":"https:\/\/belacereais.com.br\/en\/wp-json\/wp\/v2\/media?parent=28405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/belacereais.com.br\/en\/wp-json\/wp\/v2\/categories?post=28405"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/belacereais.com.br\/en\/wp-json\/wp\/v2\/tags?post=28405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}