Micronutrient Constraints to Crop Production in the Near East

Rashid, Abdul; Ryan, John

doi:10.1007/978-1-4020-6860-7_6

Cited by 34 publications

(25 citation statements)

References 84 publications

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“…On the other hand, Zn application reduced Mn shoot content at the highest and the lowest dose of P. It also reduced Cu shoot content at the highest P supply. However, all treatments had required shoot contents in Mn and Cu [26]. The depressed effect of Zn supply on Mn and Cu shoot content was reported with Zn foliar spray in corn silage grown in the same sandy soil [19].…”

Section: Shoot and Root Mineral Contentmentioning

confidence: 65%

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Effect of Zinc-Phosphorus Interaction on Corn Silage Grown on Sandy Soil

et al. 2015

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This study investigated the response of corn silage to different combinations of zinc (Zn) and phosphorus (P) soil supply when grown in sandy soil. The soil was naturally poor in extractable Zn and rich in plant-available P. The experiment was conducted in outdoor containers. The treatments consisted of soil supply combinations of 3 levels of Zn (0, 5 and 10 mg Zn kg −1 of dry soil) and 4 levels of P (0, 12, 36 and 72 mg P2O5 kg −1 of dry soil). The results showed the absence of a significant effect (at p ≤ 0.05) of Zn-P interaction on plant growth, plant mineral content or total aerial dry weight at harvest. P application depressed Zn shoot content, and conversely, Zn supply slightly reduced P shoot content. The total aerial dry weight at harvest was not enhanced by P application. However, it was significantly increased by Zn supply of 5 mg·kg ) application (at p ≤ 0.05). This increase was around 15% compared to no Zn soil supply. It was especially linked to kernel dry weight and particularly to pollination rate. For the highest level of P supply, Zn applications significantly enhanced (at p ≤ 0.05) the kernel dry weight and the pollination rate by 22.1% and 38.4% respectively, compared

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Section: Shoot and Root Mineral Contentmentioning

confidence: 65%

“…Also, a significant diminishing effect from P application on K shoot content was recorded. Nevertheless, all treatments showed an adequate K shoot content around 0.7% [26], and no K deficiency symptoms has been revealed. In contrast, no significant implication of Zn and P applications on N shoot content was noticed.…”

Section: Shoot and Root Mineral Contentmentioning

confidence: 89%

Effect of Zinc-Phosphorus Interaction on Corn Silage Grown on Sandy Soil

et al. 2015

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“…Even if we remarked negative relationships between shoot Zn content and Mg (r² = 0.73), K (r² = 0.59), Mn (r² = 0.63), Cu (r² = 0.68) and Fe (r² = 0.59) at harvest, Zn foliar spray at 0.09% resulted in adequate plant content of k (0.8%) which was approximately equal to the critical level ranging between 0.7% and 0.9% (Arnon, 1975). Also, it induced adequate levels of Mn, Cu and Fe (Rashid & Ryan, 2008). The plant Mg content (0.12%) was lower than the adequate concentration of 0.20% requested for corn silage by Fox and Piekielek (1984).…”

Section: Mineral Shoot Contentmentioning

confidence: 66%

Corn Silage (Zea mays L.) Response to Zinc Foliar Spray Concentration When Grown on Sandy Soil

Drissi¹,

Houssa²,

Bamouh³

et al. 2015

JAS

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The objective of this study is to identify an adequate zinc (Zn) foliar spray concentration which corrects Zn deficiency without disrupting other plant mineral contents, enhances plant growth, and thereby corn silage yield when grown on sandy soil. A field experiment was conducted using five Zn foliar spray concentrations (w/v): 0.03%, 0.07%, 0.10%, 0.14% and 0.18%. Zn sulfate (ZnSO 4 . 7H 2 O) was used as a source of Zn. Zn foliar application was realized at two growth stages (6-7 and 9-10 leaf stages). A treatment without Zn foliar spray was maintained as control. The results showed a quadratic response of corn silage towards Zn foliar spray concentrations, in which 0.09% was the optimum value for overcoming Zn deficiency. Such level increased shoot Zn concentration at harvest from 15 mg kg -1 to 21.8 mg kg -1 , didn't decrease plant mineral content below critical levels, enhanced plant growth and raised silage yield by 49.4% compared to control. On the other hand, Zn foliar spray concentration up to 0.10% induced visible leaf damage, growth inhibition and a decrease of 26% in silage yield compared to Zn foliar applications at 0.09%.

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“…Thus, it was hypothesized that B concentration in growing immature leaves could better reflect cotton plant's current B status and the need for B fertilization, compared with B concentration in mature or older leaves. In contrast, the reported plant analysis norms for B-deficiency diagnosis predominantly pertain to fully mature leaves (Reuter and Robinson 1997;Rashid and Ryan 2008). Therefore, we investigated relative sensitivity of B concentration in fully mature and youngest cotton leaves to soil B status.…”

Section: Introductionmentioning

confidence: 81%

Boron Requirement of Irrigated Cotton in a Typic Haplocambid for Optimum Productivity and Seed Composition

Ahmed¹,

Abid²,

Rashid³

et al. 2013

Communications in Soil Science and Plant Analysis

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Boron (B) deficiency hampers cotton (Gossypiumhirsutum L.) growth and productivity globally, especially in calcareous soils. The crop is known as a heavy feeder of B; however, its reported plant analysis diagnostic norms for B-deficiency diagnosis vary drastically. In a 2-year field experiment on a B-deficient [hydrochloric acid (HCl)-extractable 0.47 mg B kg −1 ], calcareous, Typic Haplocambid, we studied the impact of soil-applied B on cotton (cv. CIM-473) growth, productivity, plant tissue B concentration, and seed oil composition. Boron was applied at 0.0, 1.0, 1.5, 2.0, 2.5, and 3.0 kg B ha −1 , as borax (Na 2 B 4 O 7 ·10H 2 O), in a randomized complete block design with four replications, along with recommended rates of nitrogen (N), phosphorus (P), potassium (K), and zinc (Zn). Boron use improved crop growth, decreased fruit shedding, and increased boll weight, leading to seed cotton yield increases up to 14.7% (P < 0.05). Improved B nutrition of plants also enhanced seed oil content (P < 0.05) and increased seed protein content (P < 0.05). Fiber quality was not affected. Fertilizer B use was highly cost-effective, with a value-cost ratio of 12.3:1 at 1 kg B ha −1 . Fertilizer B requirement for near-maximum (95% of maximum) seed cotton yield was 1.1 kg B ha −1 and HCl-extractable soil B requirement for was 0.52 kg ha −1 . Leaf tissue B requirement varied with leaf age as well as with plant age. In 30-day plants (i.e., at squaring), B-deficiency diagnosis critical level was 45.0 mg kg −1 in recently matured leaves and 38.0 mg kg −1 in youngest open leaves; at 60 days old (i.e., at flowering), critical concentration was 55.0 mg kg −1 in mature leaves and 43.0 mg kg −1 in youngest leaves. With advancement in plant age critical B concentration decreased in both leaf tissues; that is, in 90-day-old plants (i.e., at boll formation) it was 43.0 mg kg −1 in mature leaves and 35.0 mg kg −1 in the youngest leaves. As critical concentration range was narrower in youngest leaves (i.e., 35-43 mg kg −1 ) compared with mature leaves (i.e., 43-55 mg kg −1 ), B concentration in youngest leaves is considered a better indicator for deficiency diagnosis.

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Micronutrient Constraints to Crop Production in the Near East

Cited by 34 publications

References 84 publications

Effect of Zinc-Phosphorus Interaction on Corn Silage Grown on Sandy Soil

Effect of Zinc-Phosphorus Interaction on Corn Silage Grown on Sandy Soil

Corn Silage (Zea mays L.) Response to Zinc Foliar Spray Concentration When Grown on Sandy Soil

Boron Requirement of Irrigated Cotton in a Typic Haplocambid for Optimum Productivity and Seed Composition

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