Effects of fertilization on crop production and nutrient-supplying capacity under rice-oilseed rape rotation system

Abstract

Incredible accomplishments have been achieved in agricultural production in China, but many demanding challenges for ensuring food security and environmental sustainability remain. Field experiments were conducted from 2011–2013 at three different sites, including Honghu, Shayang, and Jingzhou in China, to determine the effects of fertilization on enhancing crop productivity and indigenous nutrient-supplying capacity (INuS) in a rice (Oryza sativa L.)-rapeseed (Brassica napus L.) rotation. Four mineral fertilizer treatments (NPK, NP, NK and PK) were applied in a randomized complete block design with three replicates. Crop yields were increased by 19–41% (rice) and 61–76% (rapeseed) during the two years of rice-rapeseed rotation under NPK fertilization compared to PK fertilization across the study sites. Yield responses to fertilization were ranked NPK > NP > NK > PK, illustrating that N deficiency was the most limiting condition in a rice-rapeseed rotation, followed by P and K deficiencies. The highest and lowest N, P and K accumulations were observed under NPK and PK fertilization, respectively. The INuS of the soil decreased to a significant extent and affected rice-rapeseed rotation productivity at each site under NP, NK, and PK fertilization when compared to NPK. Based on the study results, a balanced nutrient application using NPK fertilization is a key management strategy for enhancing rice-rapeseed productivity and environmental safety.

Organic Manure Coupled with Inorganic Fertilizer: An Approach for the Sustainable Production of Rice by Improving Soil Properties and Nitrogen Use Efficiency

“…In the present study, total root length was positively correlated with grain yield (0.94 **) and biomass (0.98 **) under combined fertilization, as shown in Table 8. This could be because together, manure and mineral fertilizer improved soil fertility (nutrient availability) throughout the growing season, especially at the later period, which ultimately enhanced root growth and allowed more nutrient uptake for higher photosynthesis activity, resulting in maximum crop growth and biomass production [77,78].…”

North–South Trade Agreements and Agricultural Input Use

“…The use of improved seeds, fertilizers and other agronomy technologies has been stated in the literature as the driving force for the 1960s Green Revolution in Asia Hazell (2009). A field experiments by Yousaf et al (2017), in china has shown the impact of fertilizer use on agricultural yield: the application of fertilizers enhanced crop yields by 19-41% for rice and by 61-76 % for rapeseed. Similarly, a field experiment in Kenya by Duflo, Kremer, and Robinson (2008) has demonstrated that the use fertilizer results in a 36 % increase in the mean rate of return over a season, implying that there is 69.5 % increase in the rate of return on an annualized basis.…”

Effect of long‐term balanced and imbalanced inorganic fertilizer and FYM application on chemical fraction of DTPA‐extractable micronutrients and yields under rice–wheat cropping system in mollisols

“…Imbalanced use of chemical fertilizers as a source of nutrients for crop over a period of years tends to decline nutrient availability (Yousaf et al, 2017). Micronutrients have an important role in increasing the productivity and quality of crop (Tavakoli et al, 2014;Uprety, Hejcman, & Száková, 2009).…”