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

Accueil du site → Master → Inde → 2020 → Weed management in rainfed pearl millet [ Pennisetum glaucum (L.) R. Br. emend Stuntz] under conservation agriculture

Indian Agricultural Research Institute, New Delhi (2020)

Weed management in rainfed pearl millet [ Pennisetum glaucum (L.) R. Br. emend Stuntz] under conservation agriculture

MUNNY CHINYO

Titre : Weed management in rainfed pearl millet [ Pennisetum glaucum (L.) R. Br. emend Stuntz] under conservation agriculture

Auteur : MUNNY CHINYO

Université de soutenance : Indian Agricultural Research Institute, New Delhi

Grade : Master of Science (MS) 2020

Résumé partiel
A field study entitled “weed management in rainfed pearl millet (Pennisetum glaucum (L.) R. Br. emend Stuntz) under conservation agriculture” was conducted at the research farm of ICAR-Indian Agricultural Research Institute, New Delhi during rainy season of 2019. The experimental site is situated at 280 40’N latitude and 770 12’E longitude at an elevation of 228.6 m above mean sea-level, which is characterized by semi-arid climate. The soil of the experimental site was sandy loam in texture (sand 63.1%, silt 19.7% and clay 17.2%) with pH 7.79 in the top 15 cm of soil. The soil was low in available nitrogen (152 kg ha-1 ), organic carbon (0.38%), medium in available phosphorus (12.26 kg ha-1 ) and potassium (245 kg ha-1 ). The experiment was laid out in a split plot design with three replications keeping three tillage practices (conventional tillage, zero tillage, zero tillage + residue 3t ha-1 ) in main plots and seven weed management treatments [Weedy check, hand weeding at 30 and 50 DAS, atrazine 0.75 kg ha-1 (PE) + 2,4-D 0.75 kg ha-1 (PoE), atrazine 0.75 kg ha-1 (PE), atrazine 0.75 kg ha-1 (PE) + tembotrione 0.05 kg ha-1 (PoE), atrazine 0.75 kg ha-1 (PE) + tembotrione 0.075 kg ha-1 (PoE) and atrazine 0.75 kg ha-1 (PE) + tembotrione 0.10 kg ha-1 (PoE)] in sub plots. Pearl millet cv. ‘Pusa composite 443’ was planted in rows, 45 cm apart using 5 kg seed ha-1 on 16 thJuly and harvested on 3 rd October, 2019. Data on weed species showed that experimental pearl millet crop was infested with 6 species of grasses, 2 of sedges and 5 of broad-leaved weeds species in weedy check plots. Results of the study indicated that different tillage and weed management practices significantly influenced weed density, dry weight of weeds and weed control efficiency recorded at 30, 60 DAS and at harvest. The lowest weed density, dry weight of weeds as well as highest weed control efficiency was recorded with Zero tillage + residue 3 t ha-1 , which were significantly better than zero tillage and conventional tillage.

Présentation (KrishiKosh)

Page publiée le 26 mars 2021