Weed Interference in Okra Crop in the Organic System During the Dry Season

Abstract

In organic systems during the dry season, competition of weeds with okra increases the critical period of interference of these species and yield losses. The objective of this research was to determine the critical period of weed interference in organic okra during the dry season in São Luís - MA. The experiment was conducted from October/2014 to January/2015 in randomized blocks, with four replicates. The treatments were the periods of 07, 14, 21, 28, 35, 42 days after the transplanting of the crop with control and coexistence of the infesting community. The species with the highest importance value index were Cynodon dactylon, Eleusine indica, Amaranthus spinosus and Commelina benghalensis. The CPWI was 04 to 53 days after transplanting and yield losses were 69.5%. The organic okra cropping system during the season dry should be free of weeds until the beginning of the harvest to avoid high yield loss.

Dinâmica da decomposição dos adubos verdes na manutenção da fertilidade do solo, disponibilidade de nutrientes e manejo agroecológico de plantas espontâneas em hortaliças

“…[11]. Quando observado o período crítico de interferência das plantas espontâneas na cultura do quiabeiro que varia de 12 a 36 dias após a emergência na estação chuvosa Santos et al, [12], e de quatro a 53 dias após o transplantio na estação seca Santos et al, [13] infere-se que os adubos verdes depositados no solo podem ser uma alternativa eficientes a curto e médio prazo no manejo das plantas espontâneas.…”

Amelioration of Pathogen Induced Biotic Stress to Vegetable Crops by Plant Beneficial Bacteria: A Review

“…Yield loss [6] Insect-Pests Eggplants -Shoot and fruit borer Damages foliage, flower buds and fruits [26] -Jassids Affect leaves and fruit yields [27] -Leaf eating beetles Feed on leaves and seriously damage plants [28] until harvest to identify and properly diagnose diseases on time. This will help to find a suitable management strategy to limit the damage caused by the pathogens.…”

“…So, the demand for nutritive vegetables with high quality is growing worldwide. The vegetable crops are extremely susceptible to biotic stresses such as insect-pests [1,2] , bacterial [3,4] and fungal [5] phytopathogens and weeds [6] , which have caused substantive yield losses in many countries. For example, a significant loss of 40% in potato due to pathogens is reported [7,8] .…”

Improving the Management of Parthenium hysterophorus to Enhance Okra Production through the Application of Chemicals, Adjuvants and Plant Extract Blends in Pakistan

“…Copyright © 2021 Universitas Sebelas Maret reasons such as conventional method of sowing, imbalanced application of fertilizers, high cost of input and poor management of weeds. The pod yield losses by weed infestation in okra ranged from 69-74% (Zareen et al, 2017;Santos et al, 2020). Weeds cause serious concerns for the stability of ecosystem and socio-economic development of marginal and small farms, specifically particularly in semi-arid regions and this threaten smallholder production (Pratt et al, 2017;Shekhawat et al, 2017).…”