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4
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1answer
63 views

What's meruach hak'ri and why do it?

In general, one is required to take t'rumos and maasros from grain only once the pile of grain is been smoothed (מירוח הכרי, meruach hak'ri). (I think other halachos also kick in then.) What exactly ...
2
votes
1answer
203 views

Watering Synthetic Grass on Shabbat?

Is there a problem of watering synthetic grass on Shabbat- If the synthetic grass has gaps or "holes" whereby the water can leak through to the earth underneath it? What if the earth underneath ...
4
votes
0answers
30 views

*Tzomeach* (צוֹמֵחַ) in kashrus halacha

To find the kashrus status of an organism, we first need to correctly classify it as tzomeach, animal, bird, or fish, as each group has its own distinct requirements. E.g., animals need to chew cud ...
3
votes
0answers
32 views

Arvei Nahal - species

Vayikra 23:40 provides the commandment to take up the 4 species on Sukkot: וּלְקַחְתֶּם לָכֶם בַּיּוֹם הָרִאשׁוֹן פְּרִי עֵץ הָדָר כַּפֹּת תְּמָרִים וַעֲנַף עֵץ עָבֹת וְעַרְבֵי נָחַל וּשְׂמַחְתֶּם ...
3
votes
0answers
70 views

Can the concept of Heter Mekhirah truly be supported from the Rambam?

Many of those who support the concept of the heter mekhirah today rely (at least in part) on their reading of the Rambam in various parts of the Mishneh Torah, most specifically in Hilkhoth Shemittah ...
2
votes
0answers
36 views

Contemporary approaches to kashrut of dates

What are contemporary approaches regarding dealing with bug infestation of dates? Do Kashrut agencies (e.g. the Orthodox Union) regularly inspect crops to determine infestation levels? And if so, what ...
2
votes
0answers
27 views

Re-planting on Shabbath

If a plant was uprooted, is it considered a Melachah of planting to re-soil it on Shabbath? The simplest example would probably be that a child pulled a plant out of its pot on, or immediately ...
1
vote
0answers
6 views

What is the אדר plant, according to Rashi?

A friend of mine (Hi, Yoel!) pointed out a possible discrepancy in Rashi's comments on the Talmud. On Beitzah 15b, Rashi opines (sv ופירותיה משתמרין) that אדר is a grass (עשב), against the more ...
1
vote
0answers
22 views

Large scale hydroponics and Shmita

The gemara in Nedarim 59 (among many other places) discusses the concept of shmita produce and plants grown from them retaining their status when the original "seed" isn't destroyed when planted. In ...
1
vote
0answers
349 views

What happened to Canaan during the famine after Yaakov et al went down to Egypt?

During the famine Yosef collected all the money in both Egypt and Canaan. In the following year Yosef acquired ownership of all the land in Egypt (except the priests') for Paro, but it says nothing ...
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0answers
84 views

Pesach: Kitniyos Plants

Vegans have a hard time getting enough protein on Pesach. Is the plant that grows from a kitniyos seed also kitniyos on Pesach? What if the seed is still attached?