Effects of irrigation termination dates on grain yield, kernel moisture at harvest and some agronomic traits on maize

Yıl 2021, Cilt: 25 Sayı: 1, 100 - 108, 24.03.2021

Erdal Gönülal , Süleyman Soylu , Mehmet Şahin

https://doi.org/10.29050/harranziraat.822395

Cited By: 1

Öz

This study was conducted to investigate the effects of different irrigation termination dates on maize grain yield, kernel moisture at harvest and some other agronomic traits. The relationships between irrigation termination dates and investigated traits were visually assessed through biplot analysis. Experiments were conducted for two years (2016 and 2017) with three replications. Irrigations were terminated at eight different dates (S1: R2 blister stage; S2: R3 early milk stage; S3: R3 milk stage; S4: R3 late milk stage; S5: R4 dough stage; S6: R5 early dent stage; S7: R5 dented stage; S8: R5 late dent stage). Despite low kernel harvest moisture levels, early irrigation termination dates had low yield levels (S1:10460 kg ha-1 grain yield; 11.7% moisture). However, despite high yield levels, late irrigation termination dates had high kernel harvest moisture levels (S7:16100 kg ha-1 grain yield; and 18.8% moisture; S8:16240 kg ha-1 grain yield and 19.6% moisture). In terms of grain yield and harvest moisture, S4 (14050 kg ha-1 grain yield and 14.2% harvest moisture), S5 (14170 kg/ha grain yield and 15.0% moisture) and S6 (14880 kg ha-1 grain yield and 16.1% moisture) treatments had similar values and were considered to be as the most appropriate irrigation termination dates.
Kernel weight per ear varied between 150.6 (S1) and 238.7 g (S7); number of kernels per ear varied between 677 (S1) and 741 kernels (S5), ear lengths varied between 16.7 (S1) - 24.1 cm (S4), thousand-kernel weights varied between 271 g (S1) and 381 g (S8), hectoliter weights varied between 74.3 (S1) and 78.1 kg (S4) and number of days to physiological maturity varied between 112.5 (S1) and 124.5 days (S8).

Anahtar Kelimeler

Biplot analysis, cereal, corn, irrigation, water stress

Mısır bitkisinde sulamayı sonlandırma zamanının tane verimi, hasatta tane nemi ve bazı tarımsal özellikler üzerine etkileri

Öz

Bu çalışma mısır bitkisinde sulamayı sonlandırma zamanının tane verimi, hasatta tane nemi ve bazı tarımsal özellikler üzerine etkilerini belirlemek amacıyla iki yıl (2016-2017) süreyle üç tekerrürlü olarak Konya ekolojik şartlarında yürütülmüştür Sulama sonlandırma sekiz farklı dönemde uygulanmıştır(S1: R2 blister dönemi; S2: R3 erken süt olum; S3: R3 süt olum; S4: R3 geç süt olum; S5: R4 hamur olum; S6: R5 erken diş dönemi; S7: R5 diş dönemi; S8: R5 geç diş dönemi). Düşük tane nemine rağmen erken sulama sonlandırma zamanında tane verimi düşük olmuştur (S1:10460 kg ha-1 tane verimi; 11.7% nem). Bununla birlikte geç sulama sonlandırma zamanlarında yüksek tane verimi ile birlikte hasatta tane nemi de yüksek olmuştur (S7:16100 kg ha-1 verim ve 18.8% nem; S8:16240 kg ha-1 verim ve 19.6% nem). Tane verimi ve hasatta tane nemi açısından S4 (14050 kg ha-1 verim ve 14.2% nem), S5 (14170 kg/ha-1 verim ve 15.0% nem) ve S6 (14880 kg ha-1 verim ve 16.1% nem) uygulamaları en ideal sonuçları vermiştir.
Verimle birlikte incelenen diğer parametreler olan koçanda tane ağırlığı 150.6 g (S1)- 238,7 g(S7), koçanda tane sayısı 677 adet (S1)- 741 adet (S5), koçan boyu 16.7 cm (S1)-24.1 cm (S4), bin tane ağırlığı 271 g (S1)- 381 g (S8), hektolitre ağırlığı 74.3 kg (S1)-78.1 kg (S4) ve fizyolojik olum gün sayısı da 112.5 gün (S1)-124.5 gün (S8) arasında değişmiştir.

Anahtar Kelimeler

Biplot analizi, tahıl, mısır, sulama, su stresi

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