Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Influence of weed control and sulphur nutrition on weed dynamics and productivity of pea (Pisum sativum L.).

Abstract

A field experiment was conducted during rabi 1998/99 and 1999/2000 at Udaipur, Rajasthan, India with pea cv. Azad P-1 sown on 14 November 1998 and 29 October 1999. The treatments consisted of 6 weed management treatments (a weedy control, hand weedings at 30 and 45 days after sowing (DAS), pre-plant incorporation of fluchloralin at 1.0 kg/ha and pre-emergence application of pendimethalin at 0.75 kg/ha, oxadiazon at 0.5 kg/ha and alachlor at 1.5 kg/ha) and 4 levels of sulfur fertilizer (0, 30, 60 and 90 kg/ha). The weeds in the experimental site included Chenopodium album, Chenopodium murale, Melilotus indica, Spergula arvensis, Phalaris minor and Cynodon dactylon. Weed density was lowest with oxadiazon (40 weeds/m2), but total weed dry matter was lowest with the hand weeding treatment (251.3 kg/ha) at 60 DAS. Oxadiazon also recorded the highest values for pods per plant (28.9), seeds per pod (5.8), test weight (189.9), seed yield (2265 kg/ha) and straw yield (5629 kg/ha), followed by fluchloralin. Sulfur application had no effect on weed density but increased total weed dry matter. Yield and yield attributes also increased with increasing rates of S fertilizer.