Simplified panicle fertilization is applicable to japonica cultivars, but splits are preferred in indica rice for a higher paddy yield under wheat straw return.

ABSTRACT:

Introduction

The panicle fertilization strategy for japonica and indica rice under wheat straw return (SR) has not been updated, especially on the elaboration of their impacts on spikelet differentiation and degeneration. This study aimed to verify the hypothesis that SR increases spikelet number by reducing spikelet degeneration and to explore the possibility of simplifying panicle fertilization.

Methods

In three consecutive years, four varieties of japonica and indica rice were field-grown in Yangzhou, Jiangsu Province, China. Six panicle fertilization rates and split treatments were applied to SR and no straw return (NR) conditions.

Results

The results showed that SR promoted rice yield significantly by 3.77%, and the highest yields were obtained under the T2 (spli

SUBMITTER: Shu X 

PROVIDER: S-EPMC10861670 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature