Abd Al-ghani Khurshid(1) Wasem Adla(2) Ahmad Kattaa(3) and Obaydah AlKatib*(1)
(1). Department of Soil and Land Reclamation, Faculty of Agriculture, University of Aleppo
(2). Natural Resources Research Administration, General Commission for Agriculture Research GCSAR, Damascus, Syria.
(3). Department of Horticulture, Faculty of Agriculture, University of Aleppo, Aleppo, Syria.
(*Corresponding author : Eng. Obaydah AlKatib. E-Mail: obaydah123456@gmail.com).
Received: 18/03/2018 Accepted: 12/05/2018
Abstract
A field experiment was conducted at the Agricultural Scientific Research Center in Hama (Syria) during 2015/2016 season to study the effect of adding levels of nitrogen, phosphorus and potassium on the production of black seed according to the experimental design of complete randomized block design, with three replicates. With the addition of nitrogen levels 0-60-120 kg N/ha in the form of urea (46% N) and phosphorus levels 0-30-60 kg P2O5 /ha in the form of triple superphosphate (46% P2O5) and potassium levels 0-30-60 kg K2O/ha, in order to study and diagnose the nutritional status of black seed crop and determine the data of the integrated diagnostic system (DRIS). The DRIS data of the black seed crop was identified in the Syrian Arab Republic for the first time depending on the content of NPK in the leaves after 90 days of sowing according to the laws of Beaufils and Sumner. As well as to study of the effect of NPK factors on seed production of black seed (kg/ha). The results showed that there is a clear correlation between DRIS indicators and the physiological equilibrium of the three elements (NPK) in the leaves on the one hand, and with the seed production on the other hand. The best physiological equilibrium of (NPK) paralyzed with N120P30K30 treatment (1630 kg/ha), which were statistically similar with N120P30K60, that gave the highest yield (1609 kg/ha). The standard values of black bean plant were determined by n/p, n/k and k/p (6.19, 1.40 and 4.47) respectively.
Key words: NPK, Diagnosis and recommendation integrated system DRIS, Black seed.
Full paper in Arabic: PDF