Author: Mary Kuzmenko

CEO Petiole
I like to grow plants and ideas
Regularly read maryna@petioleapp.com

Happy Birthday, Petiole

Posted by February 13, 2018
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In this video we made a brief how to measure leaf area with a smartphone and a mobile application Petiole. It clear shows that specific leaf area measurement is not a problem and even to measure total leaf area is not an issue – less than in a minute with nothing special. Only Petiole and its Petiole kit (measuring stand and calibration pad) and three leaves of olive tree.

There are three main stages of leaf area measurement using a smartphone.

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Abstract

Fertilizer plays an important role in increasing rice yield. More than half of all fertilizer applied to the field is not taken up, resulting in environmental damage and substantial economic losses. To address these concerns, a low-cost, coated compound fertilizer named “Xiang Nong Da” (XND), requiring only a single basal application, was studied. A two-year field experiment was conducted to test the effects of XND application on rice yield and nitrogen fertilizer use efficiency. An ordinary uncoated compound fertilizer (UNCF), with 20% more nutrients and split application was selected as the control. The yield of XND-treated rice was only 3.1% lower than that of the control, an insignificant difference. There were no significant differences between N use efficiency indices of the two fertilizer treatments except for N partial factor productivity (PFP N). PFP N of XND treatment was 19.7%–23.2% higher than the control, a significant difference. This result indicates that a 20% decrease in N application rate is possible with XND without yield reduction and with savings in both labor and time.

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How to make a surface of a leaf flat for measurement? Ask Petiole, we know how

How to make a surface of a leaf flat for measurement? Ask Petiole, we know how

Простые ответы на действительно сложные практические вопросы в сельском хозяйстве и экологии. Конечно, с Петиолем :).

Если вы когда-либо пытались измерить площадь листа пшеницы, сои или груши, поделитесь своим опытом с нами! Мы предлагаем вам сказать, как “легко” было сделать поверхность листьев плоской и не вьющейся. Исходя из нашего опыта, это практически невозможно, особенно для пшеницы и риса, на ранней стадии вегетации!

Есть много лайфхаков, как приклеить эти листья или другим методом прикрепить их. Однако после таких манипуляций эти листья уже нельзя использовать для каких-либо других дополнительных измерений или исследований.

Поэтому, мы нашли элегантное решение этой проблемы. Наше решение применяется практически для любого вида листьев (зерновых, фруктов или овощей). Оно делает их поверхность полностью плоской и готовой к измерению. Хочешь попробовать :)?

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Namaste! We are terrifically delighted to be among participants of 2017 Global Entrepreneurship Summit in Hyderabad, India. This year’s Summit is highlight the theme Women First, Prosperity for All, and focuses on supporting women entrepreneurs and fostering economic growth globally.
Petiole is directly involved in STEM and making agriculture entrepreneurship closer to women worldwide. Hence, we are here to plan our next milestones :).
But now let’s listen to this beautiful lady (her name is Ivanka Tramp), make new global connections and discover endless opportunities in India.

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