The role of common milkweed in the lifecycle of the monarch butterfly has increased interest in the presence of this weed in the north central United States. An initial survey conducted in 1999 found that low densities of common milkweed occurred in approximately 50% of Iowa corn and soybean fields. In 2009, common milkweed was present in only 8% of surveyed fields, and the area within infested...

The field experiment was conducted at wetlands farms of Tamil Nadu Agricultural University during summer 2022 with an objective evaluating the non-chemical weed management practices in blackgram (vigna mungo). laid out randomized block design ten treatments replicated thrice. Treatments included leaf extracts sorghum, castor and papaya @ 30% concentration, citric acid 5% + garlic 0.2%, dust mul...

M etolachlor and excess Mn:+ (acid soil stress) induce alterations in gibberellin precursor biosynthesis that can explain the morphological responses to these physiological stresses. Oxa­ betrinil protects sorghum [Sorghum bicolor (L.) Moench] from the influence o f metolachlor and excess Mn2+. Sorghum cultivar variations in response to excess M n2+ are explicable as dif­ ferential rates o f tv...

Lignocellulosic biomass is one of the dominant renewable energy resources suited for production sustainable biofuels and other purposes. This study was focused on weed management strategies that can improve establishment six lignocellulosic crops. The studied crops included: giant miscanthus, switchgrass, reed, cardoon, sweet sorghum, kenaf. Delayed planting, increased planting densities, mulch...

To study the performance of soybean (Glycine max L.) cultivars in varying weeding regimes, a field experiment was conducted in 2010. The experiment was split plot in a randomized complete block design with 3 replicates. The four cultivars and two lines of soybean including: Sahar, Hill, Sari, Telar, 032 and 033 in main plot and weeding regime consist of no weeding (control), one weeding (35 day...

Uncontrolled growth of weeds can severely affect the crop yield and quality. Unrestricted use herbicide for weed removal alters biodiversity cause environmental pollution. Instead, identifying weed-infested regions aid selective chemical treatment these regions. Advances in analyzing farm images have resulted solutions to identify plants. However, a majority approaches are based on supervised l...

One method of evaluating the impact of insect weed biological control agents is to exclude them from their host with insecticides, thereby enabling comparisons of host fitness between infested and non-infested plants. However, the insecticide must not positively or negatively affect the plant being protected. The insecticide acephate was tested for its effects on Oxyops vitiosa Pascoe and Melal...

Changes in program directions at the Saskatoon Research Centre have resulted in the organization of a research team equipped to develop microorganisms for the biological control of important agricultural weeds. This paper presents a brief introduction to the science of inundative biological control and an overview of the research progress made on controlling Canada thistle, wild oats, and green...

This paper discusses the effects of intercropping and tree pruning on root distribution and soil water depletion in an alley cropping system with Acacia saligna and Sorghum bicolor in northern Kenya. Root distribution was determined by destructive sampling, and the soil water suction was measured with tensiometers and gypsum blocks, both up to 150 cm depth. The root systems of the intercropped ...