Diagnosis and Recommendation Integrated System Norms for Jackfruit (Artocarpus heterophyllus Lam.) Nutrient Status Evaluation

Yan Sun, Jianfeng Yang, Hua Wang, Chao Zu, Can Wang, Gang Wu and Lehe Tan

Journal of Agricultural Science, 2015, vol. 7, issue 11, 245

Abstract: In China, the balanced fertilization was neglected in jackfruit orchards from lack of monitoring nutrient status. Therefore, for identification deficiency or excess of nutrients and determination the order of nutrient requirement, the jackfruit diagnosis and recommendation integrated system (DRIS) was provided. The jackfruit DRIS norms about N, P, K, Ca, Mg, S, Fe, Mn and B were developed using 2 years data of high-yielding orchards and low-yielding orchards of Hainan, China. Based on the DRIS norms, the DRIS indices of low-yielding orchards were defined, and then determined the order of nutrient requirement. Meanwhile, the DRIS norms were used to derive the standard of DRIS index grade, which identified deficiency or excess of nutrients for jackfruit orchards. Eventually, we found that the order of low-yielding orchards nutrient requirement was Ca > K > Fe > P > N > S > Mg > B > Mn, and the deficient nutrients were Ca, K and Fe. Therefore, the establishment of the DRIS approach is very important for jackfruit nutrient status diagnosis. It may be beneficial to fertilizer plan of Hainan jackfruit orchards.

Date: 2015
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
https://ccsenet.org/journal/index.php/jas/article/download/52258/28457 (application/pdf)
https://ccsenet.org/journal/index.php/jas/article/view/52258 (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:ibn:jasjnl:v:7:y:2015:i:11:p:245

Access Statistics for this article

More articles in Journal of Agricultural Science from Canadian Center of Science and Education Contact information at EDIRC.
Bibliographic data for series maintained by Canadian Center of Science and Education ().