Investigation of the effect of non-uniform heat distribution of microwave on the mortality rates of some plants

Year 2021, Volume: 25 Issue: 3, 293 - 303, 23.09.2021

Hasan Şahin

https://doi.org/10.29050/harranziraat.885282

Abstract

Weeds, cause significant losses in agricultural production and are mostly controlled by herbicides, which are harmful to the environment. An alternative method that can be applied instead of these chemicals that pollute the soil and water is the microwave weed control method. But, one of the main problems with the microwave weed control method is the non-uniform heat distribution. This study aims to investigate the effect of non-uniform heat distribution on the mortality rate in the microwave weed control method by the NDVI (Normalized Difference Vegetation Index) technique. The NDVI technique has been used for the first time in this study to determine the mortality rate in microwave weed control. Mortality rates in one-week germinated Lepidium sativum (cress) and Hordeum vulgare (barley) grasses that were exposed to microwave energy for 10, 20, and 30 seconds were measured. It was determined that a higher rate of mortality occurred in the uniform heat distribution condition, compared to the non-uniform heat distribution (p <0.05). Mortality rates in both Hordeum vulgare (barley) and Lepidium sativum (cress) grasses increased as the microwave application time increased. The highest mortality rate occurred in Lepidium sativum (cress) grass (69.81%) and Hordeum vulgare (barley) grass (61.01%) with uniform heat distribution for 30 seconds. In the non-uniform heat distribution for 10 seconds, an increase was observed in Hordeum vulgare (barley) grass compared to the control group (7.01%). As a result, it can be said that weed control with microwave energy has the potential to be a good “environmentally friendly alternative method” to chemical weed control methods.

Keywords

non-chemical, environmentally friendly, alternative weed control, NDVI

Mikrodalganın düzgün olmayan ısı dağılımının bazı bitkilerin ölüm oranlarına etkisinin araştırılması

Abstract

Tarımsal üretimde önemli kayıplara neden olan yabancı otlar, çoğunlukla herbisit adı verilen çevreye zararlı olduğu bilinen kimyasallarla kontrol edilir. Toprağı ve suyu kirleten bu kimyasalların yerine uygulanabilecek alternatif yöntemlerden birisi de mikrodalga ile yabancı ot kontrolü yöntemidir. Ancak, mikrodalga ile yabancı ot kontrolü yöntemiyle ilgili temel sorunlardan birisi, düzgün olmayan ısı dağılımıdır. Bu çalışmada, mikrodalga ile yabancı ot kontrolünde, düzgün olmayan ısı dağılımının mortalite oranına etkisini NDVI tekniği ile araştırmak amaçlanmıştır. NDVI tekniği, mikrodalga ile yabancı ot kontrolünde mortalite oranı tespiti amacıyla ilk defa bu çalışmada kullanılmıştır. Mikrodalga enerjiye, 10, 20 ve 30 saniye süreyle maruz bırakılan bir haftalık çimlendirilmiş Lepidium sativum (tere) ve Hordeum vulgare (arpa) bitkilerinin mortalite oranları ölçülmüştür. Düzgün ısı dağılımı koşulunda, düzgün olmayan ısı dağılımına göre daha yüksek oranda mortalitenin meydana geldiği tespit edilmiştir (p <0.05). Mikrodalga uygulama süresi arttıkça hem Hordeum vulgare (arpa), hem de Lepidium sativum (tere) bitkisinde mortalite oranları da artmıştır. En yüksek mortalite, 30 saniye boyunca düzgün ısı dağılımı uygulamasında, % 69.81 ile Lepidium sativumda (tere) ve % 61.01 ile Hordeum vulgarede (arpa) meydana gelmiştir. 10 saniye süreli düzgün olmayan ısı dağılımı uygulamasında, Hordeum vulgare (arpa) bitkisi çimlenme oranı kontrol grubuna göre % 7.01 artış gözlenmiştir. Sonuç olarak, mikrodalga enerji ile yabancı ot kontrolünün, kimyasal yabancı ot kontrol yöntemlerine iyi bir “çevre dostu alternatif yöntem” olma potansiyeline sahip olduğu söylenebilir.

Keywords

kimyasal olmayan, çevre dostu, alternatif yabancı ot kontrolü, NDVI

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