Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Master → Etats Unis → 2015 → Performance And Management Of Inter-Seeded Cover Crops In A Tropical Semi-Arid Cropping System And Impact On Cotton Yield And Weed Suppression

Cornell University (2015)

Performance And Management Of Inter-Seeded Cover Crops In A Tropical Semi-Arid Cropping System And Impact On Cotton Yield And Weed Suppression

Bhaskar, Vinay

Titre : Performance And Management Of Inter-Seeded Cover Crops In A Tropical Semi-Arid Cropping System And Impact On Cotton Yield And Weed Suppression

Auteur : Bhaskar, Vinay

Université de soutenance  : Cornell University

Grade : M.S. of Horticultural Biology 2015

Résumé
Field trials were conducted in the Vidarbha region of India to investigate the potential for inter-seeded cover crops in monocropped cotton and evaluate 5 cover crop species for this purpose. The focus was to understand (1) the effects on cotton (yield) and weeds and (2) the performance of the cover crops themselves. After the living mulches were planted, no further inter-row cultivations or herbicide applications were carried out. Cover crop stands were cut back when needed to prevent shading of the cotton canopy. Cover crop biomass production of more than 80 tons ha-1 were observed, however, there were no significant effects of the system on cotton yields. Sunnhemp was the most promising species among those evaluated ; following good emergence, when the cover crop received 1 to 2 weed-free weeks during the initial growth period, weed densities less than 15/m2 and weed cover as low as 7% were recorded.

Mots clés : Cover crop, cotton, tropical, vertisol ; Sesbania, sunnhemp, weed ; soil organic carbon, cropping system

Présentation

Page publiée le 13 février 2016, mise à jour le 18 octobre 2019