Abstract
Zinc (Zn) is the micronutrient that most commonly limits maize yields but it receives much less attention than other inputs. The present field experiment was conducted to study the effect of Zn fertilizers on growth and yield of maize in farmer’s field under rainfed condition in hill region of Assam, Eastern Himalayan Region for authenticating Zn fertilizer application in increasing the yield of summer maize in actual farmer’s field condition. The experiment was carried out in 6 locations (as replication) of three villages with four treatments which consist of recommended dose of fertilizer (90:40:40 kg NPK kgha-1), recommended dose of fertilizer with ZnSO4 @15 kg ha-1, Farmers’ practice with ZnSO4 @ 15 kg ha-1 and Farmers’ practice (No application of fertilizers) as control. Maize responded positively to Zn fertilization where the yields increased from 4.62 t ha−1 without Zn to 4.91 t ha−1 with Zn under recommended dose of fertilizers. The yield response of maize to application of Zn only recorded 9.15 % increase in yield in case of farmers practice without any fertilizers. Zn application increased maize yield due to increased cob length, cob diameter, kernel numbers and kernel weight in Zn-deficient soils. The increase in grain yield in case of combined use of fertilizer and ZnSO4 (heptahydrate) was mainly due to significantly more number of kernels per cob (392) as well as kernel weight (120.3 g) over application of fertilizers only i.e. 368 and 108.4 g respectively. The result of the present study reveals that, basal soil application of Zn as ZnSO4 @ 15 kg ha-1 in maize crop along with recommended fertilizers is highly recommended for the soils of North Eastern Hill region of India.
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Claims 8
Claim · model-written summary
Zinc fertilization increased maize yield from 4.62 t ha−1 without Zn to 4.91 t ha−1 with Zn under recommended fertilizer dose.
- Treatment
- Zn fertilizatione1
- Outcome
- yieldse1
- Direction
- increasede1
- Value
- 4.91 t ha−1e1
- Qualifier
- under recommended dose of fertilizerse1
- Comparator
- without Zne1
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Maize responded positively to Zn fertilization where the yields increased from 4.62 t ha−1 without Zn to 4.91 t ha−1 with Zn under recommended dose of fertilizers”
Claim · model-written summary
Zn application alone raised maize yield by 9.15 % over farmers practice without any fertilizers.
- Treatment
- application of Zn onlye2
- Outcome
- yielde2
- Direction
- increasee2
- Value
- 9.15 %e2
- Comparator
- farmers practice without any fertilizerse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The yield response of maize to application of Zn only recorded 9.15 % increase in yield in case of farmers practice without any fertilizers”
Claim · model-written summary
Zn application increased maize yield in Zn-deficient soils.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Zn application increased maize yield due to increased cob length, cob diameter, kernel numbers and kernel weight in Zn-deficient soils”
Claim · model-written summary
Zn application increased cob length, cob diameter and kernel numbers in Zn-deficient soils.
- Treatment
- Zn applicatione3
- Outcome
- cob length, cob diameter, kernel numberse3
- Direction
- increasede3
- Setting
- Zn-deficient soilse3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Zn application increased maize yield due to increased cob length, cob diameter, kernel numbers and kernel weight in Zn-deficient soils”
Claim · model-written summary
Zn application increased kernel weight in Zn-deficient soils.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Zn application increased maize yield due to increased cob length, cob diameter, kernel numbers and kernel weight in Zn-deficient soils”
Claim · model-written summary
Combined fertilizer and ZnSO4 gave significantly more kernels per cob (392) than fertilizer alone (368).
- Treatment
- combined use of fertilizer and ZnSO4 (heptahydrate)e4
- Outcome
- number of kernels per cobe4
- Direction
- significantly moree4
- Value
- 392e4
- Qualifier
- 368e4
- Comparator
- application of fertilizers onlye4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Maize responded positively to Zn fertilization where the yields increased from 4.62 t ha−1 without Zn to 4.91 t ha−1 with Zn under recommended dose of fertilizers”
e4“The increase in grain yield in case of combined use of fertilizer and ZnSO4 (heptahydrate) was mainly due to significantly more number of kernels per cob (392) as well as kernel weight (120.3 g) over application of fertilizers only i.e. 368 and 108.4 g respectively”
Claim · model-written summary
Combined fertilizer and ZnSO4 gave higher kernel weight (120.3 g) than fertilizer alone (108.4 g).
- Treatment
- combined use of fertilizer and ZnSO4 (heptahydrate)e4
- Outcome
- kernel weighte4
- Direction
- higherinferrede4
- Value
- 120.3 ge4
- Qualifier
- 108.4 ge4
- Comparator
- application of fertilizers onlye4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Maize responded positively to Zn fertilization where the yields increased from 4.62 t ha−1 without Zn to 4.91 t ha−1 with Zn under recommended dose of fertilizers”
e4“The increase in grain yield in case of combined use of fertilizer and ZnSO4 (heptahydrate) was mainly due to significantly more number of kernels per cob (392) as well as kernel weight (120.3 g) over application of fertilizers only i.e. 368 and 108.4 g respectively”
Claim · model-written summary
Basal soil application of Zn as ZnSO4 at 15 kg ha-1 with recommended fertilizers is recommended for North Eastern Hill soils of India.
- Outcome
- basal soil application of Zn as ZnSO4 @ 15 kg ha-1e5
- Setting
- North Eastern Hill region of Indiae5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“basal soil application of Zn as ZnSO4 @ 15 kg ha-1 in maize crop along with recommended fertilizers is highly recommended for the soils of North Eastern Hill region of India”
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